Results of a while loop wont store in array

Question

Sam Thorpe 2019-3-5

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/448449-results-of-a-while-loop-wont-store-in-array

评论： Sam Thorpe 2019-3-6

I have the following script which calculates the quadratics of an equation in a function.

x=[10:100];
a=10;
b=100;
c=0;
resultsvector=[];
while a<b;
a=a+1;
y=quad(@myfun,c,a)
resultsvector=[resultsvector; y];
end

I have managed to get it to calculate the value of y in the range of 10:100 but now I cannot get it to store the values in array so I can plot them against the range of x. What am I missing?

Thanks

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Answer 1

Bob Thompson 2019-3-5

0
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https://ww2.mathworks.cn/matlabcentral/answers/448449-results-of-a-while-loop-wont-store-in-array#answer_363986

You need to index your result within the loop.

x=[10:100];
a=10;
b=100;
c=0;
resultsvector=[];
count = 0; %%%%%%%%%%%%%%
while a<b;
    count = count + 1; %%%%%%%%%%%%%
a=a+1;
y(count)=quad(@myfun,c,a); %%%%%%%%%%%%%
resultsvector=[resultsvector; y];
end